Re: [APML] OT: 20 Megapixel

[Jerry Lodriguss <jml@astropix.com>]

At 12:15 PM 9/6/2002 +0000, you wrote:
>read carefully: KAF-22000CE. it's a color chip. thes one shot color
>cameras are great for daytime photos, but use interpolation to get the
>RGB information, and also do not weight the color properly for
>astronomical purposes. the pixcels are 9 microns, same as the ST-8 and
>FLI 6303, but remember that the color resolution will be much lower (not
>sure of the exact size).

Hi Sean,

I too used to think the color lost resolution on these cameras, but I read 
recently that the color reconstruction was nearly lossless. The reason is 
that unlike spatial interpolation where pixels are created where none 
existed before, color interpolation is correlated because the color is 
being sample at the actual pixel location.

This makes sense. The color for daytime subjects with digital cameras, 
especially those that have been accurately profiled, is excellent.

Now the subject of accurate color for long-exposure deep-sky 
astrophotography is, of course, another matter. <G>

Jerry

Astronomical photography: http://www.astropix.com




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